I did not find any full list that's why posting
English commentary:
Harsha Bhogle, Simon Doull, Pommie Mbangwa, Sanjay Manjrekar, D Morrison, M Slats, Murali Kartik, Michael Vaughan, I Bishop, David Lloyd, Brett Lee, Graeme Smith, Matthew Hayden, Sunil Gavaskar, Mel Jones, Kevin Pietersen, Michael Clarke, Lisa Carprini Sthalekar, Isa Guha, Nasser Hussain and R. Gavaskar.
IPL Bangla commentary team:
Bangla : Ashok Dinda, Ranadeb Ranjit Bose, Abhishek Jhunjhunwala, Saradindu Mukherjee, G. Bhattacharya, P. Roy, Sourav Ganguly
IPL Kannada commentary team for Star Suvarna Plus
Sunil Joshi, Vijay Bharadwaj, Sujith Somasundar, Akhil Balachandra, Chandramouli Kanavi, GK Anil Kumar, Gundappa Vishwanath and Srinivas Murthy.
Telugu Commentary team for Star Maa Movies
Venkatapathi Raju, Venugopal Rao, Kalyan Krishna, C Venkatesh, Chandrasekhar and P, Sudheer Mahavadi
Tamil commentary team
Tamil: Hemang Badani, Krishnamachari Srikkanth, Laxman Sivaramakrishnan, VB Chandrasekhar, Subramaniam Badrinath, Abhinav Mukund, K V Sathyanarayanan
Hindi commentary panel
Aakash Chopra, Vivek Razdan, Nikhil Chopra, Jatin Sapru, VVS Laxman, Sunil Gavaskar, Irfan Pathan, Kapil Dev, Mohammad Kaif, Kartik Murali, RP Singh, Abhishek Nayar1, Rajat Bhatia and Pragyan Ojha
World feed commentary team has 24 commentators
India: Sunil Gavaskar, Sanjay Manjrekar, Murali Kartik, Harsha Bhogle, L.Sivaramakrishnan, Rohan Gavaskar, Deep Das Gupta & Anjum Chopra
Zimbabwe: Mpumelelo Mbangwa
South Africa: Greame Smith
West Indies Ian Bishop
Australia: Michael Slater, Brett Lee, Matthew Hayden, Michael Clarke, Lisa Sthalekar, Melanie Jones
England: Michael Vaughn, David Lloyd, Kevin Pietersen, Nasser Hussain, Isha Guha
New Zealand: Simon Doull, Danny Morison
IPL 2018: Here is the complete list of IPL commentators in all languages